Source:http://linkedlifedata.com/resource/umls/id/C1179440
FMA: Segment of lymphatic tree organ which consists of one or more lymph nodes connected by two or more lymphatic vessels; together with other lymphatic chains form a lymphatic organ part tree. Examples: occipital lymphatic chain, second intercostal lymphatic chain, external iliac lymphatic chain.,UWDA: Subdivision of lymphatic tree (organ) which consists of one or more lymph nodes connected by two or more lymphatic vessels; together with other lymphatic chains form a lymphatic tree (organ).